Where is the module css in OutSystem 11 that appeared in the training material?

I have been doing this training. https://www.outsystems.com/learn/lesson/865/themes-and-styling-exercise/

However, the style sheet editor is different in OutSystems 11. I can't find those .Header{} or .Menu_TopMenuActive{} in the module css.

There is almost nothing in this screen in the OutSystems 11. What to do?

Hi System Out,

If you are using any other theame for desinging web app or mobile app like Lisban,dublien or etc.

you have find one block BaseTheme in Css

see the below image- 

hope this will help.

Kind Regard